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Fingerprint Pattern

Fingerprint Pattern. Main Group of Fingerprint Patterns. Arch Group Loop Pattern Whorl Pattern. Arch Group Patterns (5%) ‏. No counting No tracing No focal points Flow from left to right. Types of Arch. Plain Arch Tented Arch. Plain Arch. Ridges enter on one side of the pattern

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Fingerprint Pattern

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  1. Fingerprint Pattern

  2. Main Group of Fingerprint Patterns • Arch Group • Loop Pattern • Whorl Pattern

  3. Arch Group Patterns (5%)‏ • No counting • No tracing • No focal points • Flow from left to right

  4. Types of Arch • Plain Arch • Tented Arch

  5. Plain Arch • Ridges enter on one side of the pattern • Flow towards the other side • With a slight rise/ wave at the approximate center • No delta, core or recurving ridge

  6. Tented Arch • Majority of ridges form an arch • One or more ridges at the center • Shape a tent in outline giving a 90o or less • Upward thrust having an angle of 45o or more • Pattern similar to a loop but lacking one or two of essential elements

  7. Types of Tented Arch • Tented arch with up-thrust • Tented arch with angle • Tented arch resembling to a loop

  8. Loop Group Patterns (60%)‏ • One or more ridges enter on either side of the impression • Then turn around (recurve)‏ • Passing or touching an imaginary line drawn between the delta and the core • Flow toward the same side of impression from where the ridges enter

  9. 3 Elements of Loop • A delta and core • Sufficient recurve and its continuance on delta side until an imaginary line can be drawn between the delta and the core • Must have at least a ridge count of one

  10. Types of Loop • Radial Loop • Ulnar Loop

  11. Radial Loop • Downward slope or flow of ridges is toward the thumb

  12. Ulnar Loop • Downward slope or flow of the ridges is toward the little finger

  13. Whorl Group Patterns (35%)‏ • Two or more deltas • Ridges recurve in a circular manner forming a circle, spiral, oval or any variant of circle around the core

  14. Types of Whorl • Plain Whorl • Composite Whorl

  15. Plain Whorl • Two deltas • One ridge makes a turn through one complete circuit • An imaginary line drawn between the two deltas must touch or cross at least one of the recurving ridges within the pattern area

  16. Composite Whorl • Central Pocket Loop • Double Loop • Accidental Whorl

  17. Central Pocket Loop (1)‏ • Two deltas • Consequence delta (inner delta)‏ • Outer delta • One or more recurving ridge forming a complete circuit, oval, spiral, circular or any variant of circle • An imaginary line drawn between two ridges must NOT touch or cross any of the recurving ridges within the inner pattern area

  18. Central Pocket Loop (2)‏ • Two deltas • One or more recurving ridges • With obstruction at right angle to the inner line of flow • An imaginary line drawn between two ridges must NOT touch or cross any of the recurving ridges within the inner pattern area

  19. Double Loop • Two separate loop formation • Two separate distinct sets of shoulders • Two deltas

  20. Types of Double Loop • Lateral Loop • Entrance and exit of recurving ridge is the same • Twinned Loop • Entrance and exit of recurving ridge is different

  21. Accidental Whorl • Combination of TWO different types of pattern • Exception of plain arch • Two or more deltas

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